Phosphates aren't something we'd normally test for because maintaining adequate chlorine levels makes them entirely irrelevant. My local pool stores will test salt cells for me (no charge because they hope to sell replacements), which I'm pretty sure simply involves sticking the cell in a bucket of salt water, and connecting it to a controller and verifying it produces the bubbles and verifying chlorine was added to the water.

Did you get that salt reading from your SWCG control board or from a separate test kit? If the former, you should get a test kit for salt - either a k-1766 or aqua check salt strips. You can probably find the aquacheck strips in a local pool store, perhaps even the 1766 (I got mine in a local pool store). You can also order them from the links to amazon.com provided here: http://www.poolforum.com/pf2/showthread.php?14994

I didn't see a CYA reading in the information you posted. If you have low (or no) CYA it could cause the symptoms you describe as the generated chlorine would be quickly wiped out by the sun. Once the chlorine level is below the level you need based on your CYA then you could have stuff growing in the pool which would further increase the chlorine demand and correspondingly your FC reading. You definitely have something growing with a CC reading of 1.

So, I would:
1. Test the cell
2. Verify your salt reading
3. Clean up with regular chlorine/bleach as watermom suggested.

If the cell and salt readings are OK then it may be a matter of simply getting caught back up. SWCG are great for producing chlorine slowly and preventing algae, but once growth has started it's VERY difficult to clean up without adding sanitizer manually.